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    The Effects of Membrane Properties and Structural Parameters on the Non-Minimum Phase Behavior of the PEM Fuel Cell Humidification System

    Source: Journal of Fuel Cell Science and Technology:;2012:;volume( 009 ):;issue: 001::page 11005
    Author:
    John F. Hall
    ,
    Christine A. Mecklenborg
    ,
    Clay S. Hearn
    ,
    Dongmei Chen
    DOI: 10.1115/1.4003752
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The water vapor transfer across a Nafion® membrane exhibits an undesired non-minimum phase behavior. This paper will show that even in the disturbance-to-output loop, the non-minimum phase zero adversely affects the feedback controller design because of the coupling effect between the disturbance-to-output and the input-to-output loops. The non-minimum phase zero location is influenced by the channel plate structure and the membrane material property. The structural parameters examined in this research include channel plate dimensions and heat transfer coefficients. The membrane properties studied include membrane vapor transfer properties described in the Arrhenius’ equation. A governing equation to link the non-minimum phase zero and the parameters is developed in this paper. This equation shows that the non-minimum phase zero arises from the competing heat and mass transfer dynamics, and is determined by the structural parameters and membrane properties. A sensitivity study is presented and shows that structural and material property optimization can be used with the control system design to mitigate the non-minimum phase behavior in the PEM fuel cell humidification system.
    keyword(s): Channels (Hydraulic engineering) , Design , Membranes , Proton exchange membrane fuel cells , Feedback , Humidifiers , Equations AND Control equipment ,
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      The Effects of Membrane Properties and Structural Parameters on the Non-Minimum Phase Behavior of the PEM Fuel Cell Humidification System

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    http://yetl.yabesh.ir/yetl1/handle/yetl/149270
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    contributor authorJohn F. Hall
    contributor authorChristine A. Mecklenborg
    contributor authorClay S. Hearn
    contributor authorDongmei Chen
    date accessioned2017-05-09T00:51:46Z
    date available2017-05-09T00:51:46Z
    date copyrightFebruary, 2012
    date issued2012
    identifier issn2381-6872
    identifier otherJFCSAU-28952#011005_1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/149270
    description abstractThe water vapor transfer across a Nafion® membrane exhibits an undesired non-minimum phase behavior. This paper will show that even in the disturbance-to-output loop, the non-minimum phase zero adversely affects the feedback controller design because of the coupling effect between the disturbance-to-output and the input-to-output loops. The non-minimum phase zero location is influenced by the channel plate structure and the membrane material property. The structural parameters examined in this research include channel plate dimensions and heat transfer coefficients. The membrane properties studied include membrane vapor transfer properties described in the Arrhenius’ equation. A governing equation to link the non-minimum phase zero and the parameters is developed in this paper. This equation shows that the non-minimum phase zero arises from the competing heat and mass transfer dynamics, and is determined by the structural parameters and membrane properties. A sensitivity study is presented and shows that structural and material property optimization can be used with the control system design to mitigate the non-minimum phase behavior in the PEM fuel cell humidification system.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleThe Effects of Membrane Properties and Structural Parameters on the Non-Minimum Phase Behavior of the PEM Fuel Cell Humidification System
    typeJournal Paper
    journal volume9
    journal issue1
    journal titleJournal of Fuel Cell Science and Technology
    identifier doi10.1115/1.4003752
    journal fristpage11005
    identifier eissn2381-6910
    keywordsChannels (Hydraulic engineering)
    keywordsDesign
    keywordsMembranes
    keywordsProton exchange membrane fuel cells
    keywordsFeedback
    keywordsHumidifiers
    keywordsEquations AND Control equipment
    treeJournal of Fuel Cell Science and Technology:;2012:;volume( 009 ):;issue: 001
    contenttypeFulltext
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